How to enable webview2 to have Cross origin frame access to run script inside iframe

[BharathSubu]

I have a index.html file which i virtually host as follow to webview2

  private async Task CreateWebView()
  { 
       
          myMainWebView = await myWebViewFactory(myUserDataFolder, true, null, 0, 0);
          var applicationFolderPath = 'path-to-my-html-directory';
          var applicationPath = applicationFolderPath + "/" + "index.html";
          (myMainWebView as UXWebView2)?.CoreWebView2.SetVirtualHostNameToFolderMapping(
              "app",
              applicationFolderPath,
              CoreWebView2HostResourceAccessKind.Allow
          );
          myMainWebView.Navigate("https://app/index.html"); 
 }
 

this index.html has iframe , that point to my locally hosted app eg: https://localhost/app1

now when i try to access the content of the iframe in console like this ;- iframe.contentWindow.document
i have the following error

Uncaught SecurityError: Failed to read a named property 'document' from 'Window': Blocked a frame with origin "https://app" from accessing a cross-origin frame.

My end goal is to run script inside the iframe and have playwright testcases executed on them

[BharathSubu]

I am allow using These option to start my webview2 instance

                var options = new CoreWebView2EnvironmentOptions
                {
                    AdditionalBrowserArguments =
                    $"--disable-web-security " +
                    $"--allow-insecure-localhost " +
                    $"--disable-features=IsolateOrigins,site-per-process " +
                    $"--remote-debugging-port={port}"
                };

[BharathSubu]

Issue Has been resolved it , starting webview2 instance using the

    var options = new CoreWebView2EnvironmentOptions
    {
        AdditionalBrowserArguments =
        $"--disable-site-isolation-trials " +
        $"--disable-web-security " +
        $"--remote-debugging-port={port}"
    };

the order of argument passed is also important